Door-lock.



J. SOKULOV.

DOOR LOCK.

APPLICATION HLED APR.2B,1916.

" Bronx, city and State of New r door locks of the A have a into position to prevent the 40 ll have provided the head 50 or tumbler unitn sraaie lnaaranni cierren.

JACOB SOKOLOV, OF NEW YORK, IG'. Y.

To all whom t may concern.'

Beit known that citizen of the United States, and a resident of the borough of invented certain new and useful Improvements in Door-Locks, of which the following is a specification.

My invention relates more particularly to dead bolt type-that is, locks in which the bolt when in locked position cannot,` be retracted without the use of a key or other suitable tumbler mechanism. In locks of thistype itl is usual to to drop into position when the bolt is'in locked position and hold the bolt from being pushed back by direct pressure upon the end of the bolt. The detents ordinarily used 20 for this purpose depend upon a spring to hold them 1n placeA and one of the objects of my improvement is to provide a detent for the lock which shall be positively operl ated by the key or other tumbler mechanism bolt from being retracted or thrust back 'by direct pressure against the bolt itself.

In locks of this type it may occur that, although the bolt cannotl be thrust back Abecause of the detent, the door casing or keeper may be thrust to one side so that the door can be released and opened by un authorized persons. It has frequently occurred that a jimmy or other burglars imv plement has been employed to spring the door or door casing so as to release the` lock bolt from. the keeper without forcing the vhbolt back into the lock. In order to meet this objection to the ordinary dead bolt lock, of the bolt with a member adapted to be thrust out transversely to the bolt so as to provide lugs adapted to stand back of the keeperl and engage the faces thereof the keeper, either by the use of a jimmy or otherwise.

It is desirable that this safety device should be positively operated by the key mechanism and both it and the detent which holds the bolt in locked p0- sition preferably should be positively locked `so that any one attempting to tamper with the lock could not move or disengage these Specification of Letters Patent.

I, JACOB SoKoLov, al

the Bronx, county of- York, have detent of some kind which'is adaptedl of -the lock if any attempt is y made to forcibly withdraw the bolt throughl Patented May 29,1917.

i Applicationl filed Ap1i128, 1916. Serial No. 94,133.

parts. To accomplish this purpose, l preferably provide means whereby the keeper locking member in the end of the bolt is positively operated and locked in position by means of the key or tumbler mechanism which is adaptedl to operate the bolt.

One embodiment of my improvement is shown 1n the accompanying drawings, in which` Figure 1 `is a cross-section removing the top of the cover of the lock so as to expose the bolt and the parts associated therewith (line A-A of Fig. 2).

Fig. 2 represents a vertical transverse section on the broken line 2-2 of Fig. 1.

Fig. Sis a view similar to that shown in Fig. 1 with the bolt in retracted position.

Fig. 4 is a side elevation of the lock attached to a door, looking toward the end of the bolt which is in locking position.

Fig. 5 is an end view with the bolt shown in section along the line 5-5 of Fig. 1 before the cross bolt is turned. i y

Fig. 6 is a vertical transverse section through the case and bolt on the line 6-6 of Fig. 1; and

Fig. 'i' represents a longitudinal section attached to the door together with a portion of the door casing and the keeper, the bolt being lin locked position.

Referring to the drawings 1 represents the hollow box-like casing in which the parts of the lock are assembled.' The bottom of the casing is which may be `secured in place by screws in the usual or any preferred manner. One end of the casing at 3 is slotted or provided with a rectangular opening through which the bolt -l may be projected when in locked position. The bolt 4 may be guided in any preferred manner but preferably I provide a lug 5 extending from the wall of the casing 1 and adapted to fit in a slot 6 in the narrow inner end 7 of the bolt e, substantially as indicated in Figs. l and 3 of the draw ings. The head of the bolt is preferably wider and thicker than the rear portion thereof which is cutaway so that it is -preferably about half the width of the bolt head, as indicated in the drawings. This narrow rear portion 7 of the bolt is preferably providedat 8 with a notch adapted to coperate withja pin 9 extending laterally from a crank arm 10 secured to a shaft or stud 11,

preferably closed by a plate .2 1

muniti 'v or stud 11, as indicated in Figs. 2 and 7 o ,dicated in Fig. 2 of the drawings.

bolt opening 3 and provided with a hole 22 into which the.

the drawings. The knob 12 parts may be held in the normal position by a detent in the usual or any preferred ma n ner. Preferably, I make the shaft 11 long enough to extend nearly to the bottom plate ofl the lock and provide it with another similar but loosely itting crank arm 13 provided w ith a pin 14 corresponding with the 'pin 9 and extending in the opposite direc 'tion but in axial alinement therewith, as in- The crank arm 13 is preferably provided with a hub 15 which, in the usual manner, is slotted at 1G to be engaged by a tongue strip 17 connected with the key tumbler barrel 13 adapted to be operated by a key 19 in the usual or any preferred manner. Both of thelpins 9 and 14 operate in this notch y8 to throw the bolt in either' direction, however, as the two crank varms 1() and 13, are independently mounted, either one can be operated without operating or turning the other; This is desirable in'order that the bolt may be thrown by turning the knob 12, which would be on the inside of a room, or by means of a key in the tumbler barrel 18, locatedon the outside of the door in the usual method of attaching locks of this type.'

As previously indicated, itis desirable 1n locks of this character to positively lock the bolt 4' when in locking position so that it cannot be forcibly pushed back into the lock by pressure upon the bolt. For this purpose.

I preferably provide the bolt 4 with. a ver- I tical, transverseliole or slot at 20 and mount therein a detent member 21 adaptedY to cooperate with a suitable fixed stop 22, connected with or secured to the casing 1 ofthe lock. In the present instance, I have preferably shown an integral partition 23 extending inward from the lower edge of thc of the end of the casing 1 lower end of the detent member 21 is adapted to enter when the bolt 4 is in locking position, as indicated in Fig. 1 of the drawin gs It is desirable that this detent 21 shall be positively moved into position to lock the bolt 4 and` require to be positively vwithdrawn from the hole 22 to unlock the bolt 4 when it is desired to retract the latter. This positive movement of the detent 21 I pref-- and connected other of the wise from forcibly opening raaf/,eea

erably accomplish by providing the upper narrow portion of the bolt dinal slidable U-shaped plate or cam member 24 provided on one side with an arm 25 in which a cam slot 26 is formed. The upper end of the detent member 21, in the present instance, is provided with a `pin 27 extending laterally 27a; in the side wall of the bolt 4 and into `the cam slot 26, as indicated inFigs. 1, 3 and Gof the drawings.

preferably held in place by suitable lugs 23,-

-This cam plate 24 is 23L and 29 projecting from the casing land plate 2, as indicated in Figs. 1, 2 and3 of the drawings, and adapted to lie along the sides and back or upper side of the narrow portion 7 lof the bolt 4.

The cani plate 24 to be slid or moved dependently of the tumbler devices which are adapted to operate the bolt 4 previously described. ln order that this may be -satisfactorily accomplished, the plate notches having segmental faces adapted to cooperate with arms 31V and 32, forming part of and extending radially from the crank arms 10 and 13, as indicated in Figs. 1, 2, 3 and 7 of the drawings. Additional is preferably adapted longitudinally and innotches 33, of any suitable shape, are pro,n

vided on each side of the cam plate 24 to permit the passage vof the arms 10 and 13 and the pins 9 and 14 when one or the latter is passing through the slot or notch indicated in Fig. 3 of the drawings. lt will be seen, therefore, that the notches 30 and the copei'ating arms or lugs 31 and 32, correspond to a ,single tooth gear and rack construction for transforming the circular movement of the tumbler devices into longitudinal movement of the cam Vplate 24, independently of the movement of the bolt 4,-7. The movement 424 is independent of the movement of the bolt 4-7 in order tliat.the cam 26 operating on the pin 27 may operate the detent 2,1 eitherl after the bolt is thrown by the tumbler devices or just before it is thrown. Thisv operation of the detent member is timed to occur only when the bolt 4 is in locking position--that is, when it isyin the position shown in Figs. 1 and 7 of the drawings. l

I have previously` pointed out that Tl 'provide means for preventing the keeper from being forcibly removed from the bolt 4 or in other words to prevent unauthorized persons by means of a jimmy or otherthe door to which the lock is attached. For this pur-y pose 1 preferably provide the head or end of the bolt 4 at 34 with a transverse slot or opening in which there is mounted a winged disk or cross bolt member 35 which bolt by` means of thel S while operating the bolt, as-

7 witha longitutherefrom through a .slot

of the cam plate is preferably pivoted on a. shaft 36 extending longitudinally of the bolt .head and having bearings therein, the arrangement being substantially as shown in Figs. 1, 3V

and 5 of the drawings. The'inner end of the shaft 36 is preferably. provided Aat 37 ...with pinion teeth adapted to mesh withrack teeth 38 cut on the inside of the detent member 21, asshown in Fig. 6 of theV drawings. The cross bolt member 35 is preferably secured to the shaft 36 by me'ans v of a pin or screw 39 i after the shaft is placed in position, although, obviously, any

other suitable method of securing the parts together incoperative relation may be einployed. The cross bolt^membern35 is provided with flattened sides 40 on each side of the shaft 36 in parallel relation so that when the disk or member 35 is in unlocked position, the member will preferably lie within the planes of the' Ysides of the bolt 4 and will, therefore, pass readily through the keeper opening. 41 of the keeper 42 as the bolt is thrown into or withdrawn from locking position. The cross bolt locking member 35 is shown in normal inoperative position in Figs. 3.and 5, the view in Fig. 5 representing'the bolt as thrown to locking position but' before the tumbler devices have operated the slide plate 24 to set the detent 21 and turn the member 35 crosswise of the bolt, the latter position being indicated in Figs. 4 .and 'i'. of the drawings. It will be seen that by connecting the cross bolt locking member 35 with the detent member l21 the member 35 is positively operated by me'ans of the tumbler mechanism at the same time that the detent member 21 is operated. The slide member 24, therefore, is adapted to positively throw the cross bolt 35 into locking position back of the walls of thekeeper, asindi'cated in Fig. 7 of the drawings after the bolt 4 is thrown into locking position. The cam slot 26 is preferably provided with a flat portion at 264,'near the inner end of the arm 25, which engagesthe pin 27 when the slide plate 24vis in forward position and the detent 21 in locking position to positively prevent the detent from being i lifted by turning orexerting pressure upon `bolt 4 be unlocked, the cross bolt 35 being turned in order that it may pass through the keeper and the detent lifted.

The operation -of the device will be understood from the description given in connection with the drawings and may brieiy be describedas follows:

If the lock is attached to a door and the parts are in the position indicated in Figs. l and 7 of the drawings, the door is locked and the cross bolt member and detent are in locking position to-coperate respectively with the keeper and the notch or hole 22 in the member 23. The tumbler mechanism will be in such position that the pins 9 and 14 and cam arms 31 and 32 are substantially in the position, indicated in Fig. 1 of the drawings. If now the 'shaft 11 is turned by means of the knob 12, the cam arm 31 will firstvcome in contact with the side walls of the slot 30 in the cam plate 24 and move the latter toward the left relatively to the bolt 4-7 to theposition it occupies in Fig. 3 of the drawings. This movement of the cam plate 24 causes the cam 26 by cooperation with the pin 27 to lift the detent 21 out of the hole 22 and by means of the rack and pinion connection 37--33 the cross 4bolt 35 3 of the drawings.

l/Vhen it is desired to lock the door by throwing the bolt to locking position, the reverse operation takes' place-that is, the parts to start with are in the position indicated in Fig. 3 of the Vdrawings and the shaft 11 is turned in the opposite directionor, as viewed in Fig. 3, clockwise, so

as to bring the pin 9 into engagement with the notch S and throw the bolt toward the right or into locking position and then the cam arm 31 is brought into position to engage the notch 30 of the cam plate and move it toward the right relative to the bolt 4 into the position shown in Fig. 1 of the drawings, thereby positively actuating the detent 21 and the cross bolt member They will then be in position to positively prevent the forcible retraction of the bolt or the forcible removal of the keeper 42 ofi' the end of the bolt. The parts will be positively locked in this position by the flat portion 26 of the cam lever so that they can he restored to normal position only by the action of the tumbler devices, either through the knob )l2-'o1' the key 19 acting through the connecting member 17 and the crank arn .13, as described. i

It will be understood that I have herein shown and described one form of my device but obviously various modifications and adaptations of the mechanical elements employed may be made and various modifications in the speciie details of construction might be devised by those skilled in the art without departing from the spirit and scope of my invention, and, therefore, I do not wish to be limited to the particular construction shown.`

I claim:

l. A door lock comprising a` slide bolt adapted tojcoperate with a keeper, a 1nember adapted to be projected laterally from the bolt head to prevent withdrawal thereof through the keeper, a. detent adapted to hold said bolt in thrown position, said detent and said member being connected to operate in unison, means for locking said detent and member 'against forcing and tumbler devices for positively operating the bolt, said detent and said locking means in sequence.

2. A door lodi( comprising a slide bolt, a cross bolt mounted in the end of the slide bolt and adapted to be projected laterally therefrom, a movable detent for holding said slide bolt in locked position, and means connecting said cross bolt and the detent to operate in unison whereby when the detent 'is in position to hold the slide bolt against retraction, the cross bolt is projected therefrom.

3. A door lock comprising a slide bolt, a`

cross bolt mounted in the end of the slide bolt and adapted to be projected laterally therefrom, a movable detent for holding said y slide bolt in locked position, means connecting said cross bolt and the deteiit to operate in unison whereby when the detent isin position to hold the slide bolt against retraction, the cross bolt is projected therefrom, and tumbler devices adapted in unlocking said lock to first lift said detent and withdraw said cross bolt and` then withbolt and provided with portions adaptedv to be turned out of the bolt, back of said keeper when said bolt is in locked position,

means for locking said member against forcing and tumbler" devices for moving said bolt, adapted, when the bolt is in locked position, to positively turn said 4pivoted mancati f member and lock it, whereby the latter becomes operative to prevent forcing-.the bolt out of4 the keeper.

5; In a door lock of the character described, the combination witha keeper of a tent for locking said bolt in locked position` in the keeper, and tumbler means adapted to simultaneously operate said detent and said locking members when said bolt is in locked position.

A G. In' a door-lock of the character described, the combination with a slidable bolt adapted to enter a keeper, the head of said bolt being providedwith a slot, a locking member pivotally mounted in said slot and adapted to vbe turned out of the bolt into a position to prevent, forcing` the bolt out of the keeper, a detentA for locking the bolt in locked position, a cam-plate adapted to operate said detent and said locking mem'- ber simultaneously, and tumbler devices for throwing said bolt, adapted, when the bolt is in locked position, to operate said camplate whereby said detent and locking member are operated after locking and before unlockingsaid bolt.

7. In a door-lock of the character described, thel combination with a slidable bolt adaptedto enter a keeper, the head of said bolt being provided with a slot, a segmental disk pivotally mounted in said slot, the diameter of the disk being greater'than the thickness of said boltl but having opposite sides cut away to leave a width the thickness of the bolt, a detent adapted to lock said bolt in locked position, said detent and segmental disk being connected together to operate in unison so that when the detent is in locking position said segmental disk is turned crosswise of said bolt head, a

slide plate adapted to operate said detent and disk, means 'for locking said detent and disk against movement, and tumbler devices for sliding said bolt, adapted to operate said slide plate .and said last named means for locking said ,detent and disk substantially as described.

- JACOB SOKOLOV., 

